IRWIN TWP, Venango County — A Grove City area man died Wednesday night when a tractor-trailer pinned him against a loading dock at Ward Trucking off Old Route 8. Chief Gerry Rea of the Clintonville Volunteer Fire Department said this morning that the 50-year-old man, whose name was unavailable, was injured about 8:30 p.m. when the truck backed up to the loading dock. “He got crushed,” Rea said. Authorities are investigating how the accident happened. “We don’t know a lot of the details,” Rea said. He said emergency workers couldn’t revive the man. “We never got a pulse on him,” Rea said. The man was taken by Superior Ambulance to the Grove City Medical Center, where he was pronounced dead.